Type-writing machine.



Mmmm me 2, MM.

2 SHEETSWSHEBT 1.

STRUNG.

TYPE WRTING MAUHN APPLIOAToEYLED MAY21,191&

Wwf/wm MM@ df/@5,

' MMR/vw Wi WM' M E. E. STRONG. TYPE WRITING MACHINE. APPLIUAMON 11mm) MAY 21, 1912.

Patented Jima 2, 19M.

mmm

' 2 SHEETS-SHEET 2.

Maz/vw@ y m gy 'AWMHMY f narran strains rirrnn'r ormon- ELISHA EMMANUEL STRONG, F PAR-IIS, FRANCE, SSGNOR TO "UNDERWOOD 'TYPBL WINTER COMPANY, OF NEW YORK, N. Y., A. CORPCRATION 0F DELAWARE.

resales.

Specification of Letters IPatent.

Patented June 2, 1914.

Application filed May 21, 1912. Serial No. $98,682.

To all wiz/0m it may concern.'

lie it kno-Wn that l, Emst-ra EMMANUEL STRONG, a citizen oi' the United States, residing at S6 Boulevard des italiens, in the city of Paris,- Republic of France, have invented improvements in Typedlriting Machines, of which the following is a full, clear, and exact description.

rthe present invention provides an arrangement permitting two or more sheets of paper to be placed side by side.on the carriage or platen of a typewriting machine, the sheets being independently movable in such a manner that it is possible to write or type on one oranother alternatively, and to insert interlincations. This arangement is chiellyvintendcd to permit totals or partial results extracted from a series et' operations carried out on eine sheet to be recorded on a recapitulative or docket sheet. It can, however,`be employed in numerous other ways.

The platen is formed oli several parts or sections which are placed end to end to iorni a single' cylinder operating as an ordinary one-piece cylinder or platen, the sections being separable to constitute as many platens, cach rotatable independently oi the others. For this purpose, each section is secured to a separate line-space wheel or ratchet with which a stop device or detcnt engages to hold the platen section in positions correspending to. successive lines of writing.

'Moreover, an arrangement such as a milled button vor a driving pawl, permits each platen to be actuated individually. TWhen the platen sections are uncoupled and moved separately, the paper is pressed against them by the friction or pressure rollers of the carriage, as in ordinary single cylinder platen machines. Not only can a single sheet or band. ot paper be put ior use on each platen section, but sheets of carbon paper, duplicate sheets and ily sheets can be put thereon as in an ordinarymachine with only a single cylinder or platen.

@their objects and advantages vv'illhereinA after appear.

The invention caribe carried into practice y by various constructional forms.

ln the accompanying drawings, Figure l is a sectional vieu/ot a platen comprising two separately operated parts or Sections, and their adjuncts. Fig. 2 is a similar' view showing the two parts et the platen coupled together and operating as a single cylindrical platen. Fig. 3 is a view of a modification wherein the platen comprises three sections. Figs. fl and 5 show a pawl feed device per mitting the actuation of the second part of the platen to be effected by a lever employed to raise the friction or pressure rollers from the platen.

ln F ig. l a represents the vlranie of a type- Writing machine carriage, is the spindle or axle of the cylindrical platen c which can be actuated in the ordinary manner either directly by hand through milled buttons d, d', or indirectly by means of a lever e Which through the intermediary of any suitable pawl device f, actson a line-space Wheel or ratchet g keyed on the spindle b, and thereby rotates the platen c through an angle corresponding to one, tWo or three teeth of the ratchet. A. detent roller r pressed by a. spring i against the ratchet teeth g supports it in the ordinary manner, in the position to which it has been moved. The platen c only occupies a part oiA the length of the carriage, and a second platen c of the same diameter is mounted free on tlsl same spindle. This platen c is secured to a line-space ratchet Wheel g against the. teeth of which a detent roller 7L is pressed by a spring i. Any suitable construction of pawl feed device y' operated by a lever le, allows the ratchet to be actuated and, in consequence, causes the platen c to turn on the spindle o. Friction or pressure rollers Z mounted resiliently in the usual manner, press the work-sheets against the platen sections c and c', and cause the sheets to move with the platen.

Fig. 2 shows the two sections c and c' brought together end to end so as to form a single cylindrical platen. In this position, the. ratchet g is 'free from the detent roller fr and pawl j, so that the platen o can rotate with the platen c. The 'friction between the platen 0 and. its spindle and also clutch engagement eected by the pins 2 and sockets 8 between the abutting ends of the platens, causes the platens to rotate together. A work-sheet extending over the two plat-ens also rictionally prevents relative rotation or' the platens. The arm carrying thesroller h is pressed against the end of the platen c and holds itin contact with the cylinder c (see Fig. 2). This arm, by abut-ting against a disk u, when the platens are separated as in Fig. l, holds the platens apart.

Fig, 3 shows a modilication lin which the platen is divided into three sections, o, c', and o2. The lirst section u is keyed as in the above described construction, Adirectly to the spindle b and is operated in the same manner. The second section o is keyed on a sleeve m which carries near its outer end a. line-space ratchet wheel g3 on which bears a detent roller if. A milled button Z2 keyed on the sleve m allows the platen section ci' to be turned by hand. The section o2 turns freely on the sleeve m arid is provided with a line-space ratchet wheel g2 on which bears a detent roller 71.2. The section o2 can be actuated by a lever 7c and pawl j. It will be seen that each platen section can be moved individually. When the sections are brought together to the left, the ratchet wheels, g3, g2 are disengaged from the rollers ha, k2 and the pawl j', so that the sections o', fz)2 can freely follow the.: movements of the section c. When the section o is moved into abutting engagement with sections e2, it iS operable in unison with said section @2. It is to be understood that Figs. l, 2 and 3 'are simpliiied views intended to permit the principles of the invention to be more clearly understood, and it is obvious that other suitable means can be provided for operating the various platen sections and for holding them in any desired position.

There may also be providedr clutch devices or like connecting means for mechanically coupling together the several platens or platen sections to prevent relative rotation when they are required to operate as a single cylindrical platen.l These clutch devices may consist of pins 2 secured to the platen sections/u, c', and adapted to enter sockets -Sa in the sections c', o".

Fig. 4v shows an arrangement in which the lever/c for actuating the pawlj operating the ratchet wheel g" ofthe second platen section c also operates to separate the feed or pressure rollers Z from the platen. As shown in Fig. 4, the pawl j, the tooth n of' which engages the teeth o the ratchet y', is returned rearwardly by a spring 0 and has a curvilinear slot p in which engages a pin g carried on the end of ihe lever 7c, pivotally mounted at non the frame 0 of the carriage. The lower end of the pawl is pivoted to a crank s keyed on a rock shaft t whichel'ects the movement of the feed rollers Z in any convenient or known manner, which may vary in different types of typewriting machines.

rlhe rock 1shaft t preferably operates through a well-known form of mechanism, as

shown, for example, in the patent to McCorma'ck, 921,619, to release the feed rolls Z/ from the platen. The shaft t can rotate through a certain distance without .effecting any movement of the rollers. When the lever 7c is depressed in the direction indicated by the arrow, it carries with it, by means oli' the pin g, the pawl j, the tooth n of which causes the ratchet wheel g. to advance by one tooth, and is then disengaged from the ratchet wheel. ln this movement, the pawl j slightly raises the crank s and turns the shaft t, but not suiticiently to lift the rollers i. from the platen. If at this period the movementof the lever ,7c isstop'ped and it is permitted to return rearwardly to its initial position, the rollers Ziwill not be moved, but the pawl y' returns rearwardly sliding on the teethof the ratchet wheel g by reason of the free movement allowed to the pin g in the slot p, and arrives in engagement with another tooth on the ratchet wheel g. Each .time the lever 7c is only slightly depressed, the ratchet wheel g will be turned by one tooth space. If now the said lever is pressed right down through its full stroke, the crank s is raised to aegreater extent (Fig. 5) and turns the shaft through an angle suicient to insure the movement of the rollers Z away from the-cylinders c and c. It will therefore be seen that the lever la serves two purposes. In the irst part of its travel it serves to rotate the platen c and during the latter part of its course it etiects the separation of the pressure rollers ln a general manner, the arrangements hereinabove described are given only by way of example, and the dispositions, forms, detail arrangements and operating means can be varied according to requirements and ae cording to the type of machine to which the invention is applied.

Having thus described my invention, I claim l. A typewriting machine carriage comprising a rotar spindle, a platen keyed thereon, means or eliec'ting rotation of the said spindle, means for holding it at rest, a sleeve mounted freely on the said `spindle and 'adapted to slide axially thereon, a second platen keyed on the said sleeve, means for rotating the sleeve, means for holding it at rest, a third platen mounted freely on the sleeve and adapted to slide axially thereon, means for rotating the said 'third platen, means for holding it at rest, means for holding the three platens separated" one from the tatable as av platen independently of the provementsintypewrtng maehnessgned other sections, said intermediate section `3e by Ine this tenth day of May, 1912. ing rotatable 'with eitherencl section, inn ELSHA EMMANUEL STRONG. all said sections being rotatable together as Witnesses: 5 a unit. H. C. Cox-E,

The foregoing specification of my. im- LOUIS S. FAREE. 

